Only seven countries worldwide meet WHO dirty air guidelines, study shows

Annual survey by IQAir based on toxic PM2.5 particles reveals some progress in pollution levels in India and ChinaNearly every country on Earth has dirtier air than doctors recommend breathing, a report has found.Only seven countries met the World Health Organization's guidelines for tiny toxic particles known as PM2.5 last year, according to analysis from the Swiss air quality technology company IQAir. Continue reading...